/mandos/release : revision 237.7.292

1

#!/usr/bin/python

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#!/usr/bin/python2.7

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# -*- mode: python; coding: utf-8 -*-

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#

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# Mandos server - give out binary blobs to connecting clients.

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except ImportError:

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SO_BINDTODEVICE = None

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version = "1.6.2"

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if sys.version_info.major == 2:

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str = unicode

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version = "1.6.9"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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syslogger = (logging.handlers.SysLogHandler

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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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address = str("/dev/log")))

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syslogger = None

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try:

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if_nametoindex = (ctypes.cdll.LoadLibrary

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SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h

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with contextlib.closing(socket.socket()) as s:

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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struct.pack(str("16s16x"),

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interface))

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interface_index = struct.unpack(str("I"),

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ifreq[16:20])[0]

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struct.pack(b"16s16x", interface))

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interface_index = struct.unpack("I", ifreq[16:20])[0]

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return interface_index

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def initlogger(debug, level=logging.WARNING):

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"""init logger and add loglevel"""

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global syslogger

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syslogger = (logging.handlers.SysLogHandler

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(facility =

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logging.handlers.SysLogHandler.LOG_DAEMON,

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address = "/dev/log"))

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syslogger.setFormatter(logging.Formatter

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('Mandos [%(process)d]: %(levelname)s:'

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' %(message)s'))

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class AvahiError(Exception):

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def __init__(self, value, *args, **kwargs):

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self.value = value

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super(AvahiError, self).__init__(value, *args, **kwargs)

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def __unicode__(self):

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return unicode(repr(self.value))

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return super(AvahiError, self).__init__(value, *args,

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**kwargs)

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class AvahiServiceError(AvahiError):

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pass

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self.bus = bus

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self.entry_group_state_changed_match = None

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def rename(self):

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def rename(self, remove=True):

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"""Derived from the Avahi example code"""

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if self.rename_count >= self.max_renames:

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logger.critical("No suitable Zeroconf service name found"

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" after %i retries, exiting.",

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self.rename_count)

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raise AvahiServiceError("Too many renames")

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self.name = unicode(self.server

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.GetAlternativeServiceName(self.name))

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self.name = str(self.server

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.GetAlternativeServiceName(self.name))

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self.rename_count += 1

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logger.info("Changing Zeroconf service name to %r ...",

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self.name)

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self.remove()

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if remove:

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self.remove()

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try:

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self.add()

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except dbus.exceptions.DBusException as error:

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logger.critical("D-Bus Exception", exc_info=error)

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self.cleanup()

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os._exit(1)

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self.rename_count += 1

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if (error.get_dbus_name()

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== "org.freedesktop.Avahi.CollisionError"):

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logger.info("Local Zeroconf service name collision.")

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return self.rename(remove=False)

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else:

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logger.critical("D-Bus Exception", exc_info=error)

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self.cleanup()

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os._exit(1)

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def remove(self):

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"""Derived from the Avahi example code"""

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self.rename()

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elif state == avahi.ENTRY_GROUP_FAILURE:

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logger.critical("Avahi: Error in group state changed %s",

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unicode(error))

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raise AvahiGroupError("State changed: {0!s}"

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str(error))

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raise AvahiGroupError("State changed: {!s}"

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.format(error))

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def cleanup(self):

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class AvahiServiceToSyslog(AvahiService):

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def rename(self):

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def rename(self, *args, **kwargs):

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"""Add the new name to the syslog messages"""

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ret = AvahiService.rename(self)

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ret = AvahiService.rename(self, *args, **kwargs)

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syslogger.setFormatter(logging.Formatter

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('Mandos ({0}) [%(process)d]:'

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('Mandos ({}) [%(process)d]:'

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' %(levelname)s: %(message)s'

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.format(self.name)))

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return ret

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def timedelta_to_milliseconds(td):

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"Convert a datetime.timedelta() to milliseconds"

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return ((td.days * 24 * 60 * 60 * 1000)

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+ (td.seconds * 1000)

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+ (td.microseconds // 1000))

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class Client(object):

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"""A representation of a client host served by this server.

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"enabled": "True",

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}

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def timeout_milliseconds(self):

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"Return the 'timeout' attribute in milliseconds"

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return timedelta_to_milliseconds(self.timeout)

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def extended_timeout_milliseconds(self):

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"Return the 'extended_timeout' attribute in milliseconds"

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return timedelta_to_milliseconds(self.extended_timeout)

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def interval_milliseconds(self):

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"Return the 'interval' attribute in milliseconds"

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return timedelta_to_milliseconds(self.interval)

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def approval_delay_milliseconds(self):

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return timedelta_to_milliseconds(self.approval_delay)

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@staticmethod

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def config_parser(config):

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"""Construct a new dict of client settings of this form:

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client["enabled"] = config.getboolean(client_name,

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"enabled")

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# Uppercase and remove spaces from fingerprint for later

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# comparison purposes with return value from the

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# fingerprint() function

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client["fingerprint"] = (section["fingerprint"].upper()

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.replace(" ", ""))

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if "secret" in section:

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"rb") as secfile:

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client["secret"] = secfile.read()

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else:

513

raise TypeError("No secret or secfile for section {0}"

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raise TypeError("No secret or secfile for section {}"

514

504

.format(section))

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client["timeout"] = string_to_delta(section["timeout"])

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client["extended_timeout"] = string_to_delta(

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523

server_settings = {}

534

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self.server_settings = server_settings

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# adding all client settings

536

for setting, value in settings.iteritems():

526

for setting, value in settings.items():

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setattr(self, setting, value)

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if self.enabled:

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self.expires = None

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logger.debug("Creating client %r", self.name)

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# Uppercase and remove spaces from fingerprint for later

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# comparison purposes with return value from the fingerprint()

552

# function

553

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logger.debug(" Fingerprint: %s", self.fingerprint)

554

541

self.created = settings.get("created",

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542

datetime.datetime.utcnow())

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609

if self.checker_initiator_tag is not None:

623

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gobject.source_remove(self.checker_initiator_tag)

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self.checker_initiator_tag = (gobject.timeout_add

625

(self.interval_milliseconds(),

612

(int(self.interval

613

.total_seconds() * 1000),

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self.start_checker))

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# Schedule a disable() when 'timeout' has passed

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if self.disable_initiator_tag is not None:

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gobject.source_remove(self.disable_initiator_tag)

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self.disable_initiator_tag = (gobject.timeout_add

631

(self.timeout_milliseconds(),

632

self.disable))

619

(int(self.timeout

620

.total_seconds() * 1000),

621

self.disable))

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622

# Also start a new checker *right now*.

634

623

self.start_checker()

635

624

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655

self.disable_initiator_tag = None

667

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if getattr(self, "enabled", False):

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self.disable_initiator_tag = (gobject.timeout_add

669

(timedelta_to_milliseconds

670

(timeout), self.disable))

658

(int(timeout.total_seconds()

659

* 1000), self.disable))

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self.expires = datetime.datetime.utcnow() + timeout

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661

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def need_approval(self):

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693

# Start a new checker if needed

705

694

if self.checker is None:

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695

# Escape attributes for the shell

707

escaped_attrs = dict(

708

(attr, re.escape(unicode(getattr(self, attr))))

709

for attr in

710

self.runtime_expansions)

696

escaped_attrs = { attr:

697

re.escape(str(getattr(self, attr)))

698

for attr in self.runtime_expansions }

711

699

try:

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command = self.checker_command % escaped_attrs

713

701

except TypeError as error:

794

782

# "Set" method, so we fail early here:

795

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if byte_arrays and signature != "ay":

796

784

raise ValueError("Byte arrays not supported for non-'ay'"

797

" signature {0!r}".format(signature))

785

" signature {!r}".format(signature))

798

786

def decorator(func):

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787

func._dbus_is_property = True

800

788

func._dbus_interface = dbus_interface

831

819

"""Decorator to annotate D-Bus methods, signals or properties

832

820

Usage:

833

821

822

@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",

823

"org.freedesktop.DBus.Property."

824

"EmitsChangedSignal": "false"})

834

825

@dbus_service_property("org.example.Interface", signature="b",

835

826

access="r")

836

@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",

837

"org.freedesktop.DBus.Property."

838

"EmitsChangedSignal": "false"})

839

827

def Property_dbus_property(self):

840

828

return dbus.Boolean(False)

841

829

"""

848

836

class DBusPropertyException(dbus.exceptions.DBusException):

849

837

"""A base class for D-Bus property-related exceptions

850

838

"""

851

def __unicode__(self):

852

return unicode(str(self))

853

839

pass

854

840

855

841

class DBusPropertyAccessException(DBusPropertyException):

856

842

"""A property's access permissions disallows an operation.

879

865

If called like _is_dbus_thing("method") it returns a function

880

866

suitable for use as predicate to inspect.getmembers().

881

867

"""

882

return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),

868

return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),

883

869

False)

884

870

885

871

def _get_all_dbus_things(self, thing):

935

921

# signatures other than "ay".

936

922

if prop._dbus_signature != "ay":

937

923

raise ValueError("Byte arrays not supported for non-"

938

"'ay' signature {0!r}"

924

"'ay' signature {!r}"

939

925

.format(prop._dbus_signature))

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926

value = dbus.ByteArray(b''.join(chr(byte)

941

927

for byte in value))

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952

value.variant_level+1)

967

953

return dbus.Dictionary(properties, signature="sv")

968

954

955

@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")

956

def PropertiesChanged(self, interface_name, changed_properties,

957

invalidated_properties):

958

"""Standard D-Bus PropertiesChanged() signal, see D-Bus

959

standard.

960

"""

961

pass

962

969

963

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

970

964

out_signature="s",

971

965

path_keyword='object_path',

1006

1000

(prop,

1007

1001

"_dbus_annotations",

1008

1002

{}))

1009

for name, value in annots.iteritems():

1003

for name, value in annots.items():

1010

1004

ann_tag = document.createElement(

1011

1005

"annotation")

1012

1006

ann_tag.setAttribute("name", name)

1015

1009

# Add interface annotation tags

1016

1010

for annotation, value in dict(

1017

1011

itertools.chain.from_iterable(

1018

annotations().iteritems()

1012

annotations().items()

1019

1013

for name, annotations in

1020

1014

self._get_all_dbus_things("interface")

1021

1015

if name == if_tag.getAttribute("name")

1022

)).iteritems():

1016

)).items():

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1017

ann_tag = document.createElement("annotation")

1024

1018

ann_tag.setAttribute("name", annotation)

1025

1019

ann_tag.setAttribute("value", value)

1081

1075

"""

1082

1076

def wrapper(cls):

1083

1077

for orig_interface_name, alt_interface_name in (

1084

alt_interface_names.iteritems()):

1078

alt_interface_names.items()):

1085

1079

attr = {}

1086

1080

interface_names = set()

1087

1081

# Go though all attributes of the class

1204

1198

attribute.func_closure)))

1205

1199

if deprecate:

1206

1200

# Deprecate all alternate interfaces

1207

iname="_AlternateDBusNames_interface_annotation{0}"

1201

iname="_AlternateDBusNames_interface_annotation{}"

1208

1202

for interface_name in interface_names:

1209

1203

@dbus_interface_annotations(interface_name)

1210

1204

def func(self):

1219

1213

if interface_names:

1220

1214

# Replace the class with a new subclass of it with

1221

1215

# methods, signals, etc. as created above.

1222

cls = type(b"{0}Alternate".format(cls.__name__),

1216

cls = type(b"{}Alternate".format(cls.__name__),

1223

1217

(cls,), attr)

1224

1218

return cls

1225

1219

return wrapper

1238

1232

runtime_expansions = (Client.runtime_expansions

1239

1233

+ ("dbus_object_path",))

1240

1234

1235

_interface = "se.recompile.Mandos.Client"

1236

1241

1237

# dbus.service.Object doesn't use super(), so we can't either.

1242

1238

1243

1239

def __init__(self, bus = None, *args, **kwargs):

1245

1241

Client.__init__(self, *args, **kwargs)

1246

1242

# Only now, when this client is initialized, can it show up on

1247

1243

# the D-Bus

1248

client_object_name = unicode(self.name).translate(

1244

client_object_name = str(self.name).translate(

1249

1245

{ord("."): ord("_"),

1250

1246

ord("-"): ord("_")})

1251

1247

self.dbus_object_path = (dbus.ObjectPath

1255

1251

1256

1252

def notifychangeproperty(transform_func,

1257

1253

dbus_name, type_func=lambda x: x,

1258

variant_level=1):

1254

variant_level=1, invalidate_only=False,

1255

_interface=_interface):

1259

1256

""" Modify a variable so that it's a property which announces

1260

1257

its changes to DBus.

1261

1258

1266

1263

to the D-Bus. Default: no transform

1267

1264

variant_level: D-Bus variant level. Default: 1

1268

1265

"""

1269

attrname = "_{0}".format(dbus_name)

1266

attrname = "_{}".format(dbus_name)

1270

1267

def setter(self, value):

1271

1268

if hasattr(self, "dbus_object_path"):

1272

1269

if (not hasattr(self, attrname) or

1273

1270

type_func(getattr(self, attrname, None))

1274

1271

!= type_func(value)):

1275

dbus_value = transform_func(type_func(value),

1276

variant_level

1277

=variant_level)

1278

self.PropertyChanged(dbus.String(dbus_name),

1279

dbus_value)

1272

if invalidate_only:

1273

self.PropertiesChanged(_interface,

1274

dbus.Dictionary(),

1275

dbus.Array

1276

((dbus_name,)))

1277

else:

1278

dbus_value = transform_func(type_func(value),

1279

variant_level

1280

=variant_level)

1281

self.PropertyChanged(dbus.String(dbus_name),

1282

dbus_value)

1283

self.PropertiesChanged(_interface,

1284

dbus.Dictionary({

1285

dbus.String(dbus_name):

1286

dbus_value }), dbus.Array())

1280

1287

setattr(self, attrname, value)

1281

1288

1282

1289

return property(lambda self: getattr(self, attrname), setter)

1302

1309

approval_delay = notifychangeproperty(dbus.UInt64,

1303

1310

"ApprovalDelay",

1304

1311

type_func =

1305

timedelta_to_milliseconds)

1312

lambda td: td.total_seconds()

1313

* 1000)

1306

1314

approval_duration = notifychangeproperty(

1307

1315

dbus.UInt64, "ApprovalDuration",

1308

type_func = timedelta_to_milliseconds)

1316

type_func = lambda td: td.total_seconds() * 1000)

1309

1317

host = notifychangeproperty(dbus.String, "Host")

1310

1318

timeout = notifychangeproperty(dbus.UInt64, "Timeout",

1311

type_func =

1312

timedelta_to_milliseconds)

1319

type_func = lambda td:

1320

td.total_seconds() * 1000)

1313

1321

extended_timeout = notifychangeproperty(

1314

1322

dbus.UInt64, "ExtendedTimeout",

1315

type_func = timedelta_to_milliseconds)

1323

type_func = lambda td: td.total_seconds() * 1000)

1316

1324

interval = notifychangeproperty(dbus.UInt64,

1317

1325

"Interval",

1318

1326

type_func =

1319

timedelta_to_milliseconds)

1327

lambda td: td.total_seconds()

1328

* 1000)

1320

1329

checker_command = notifychangeproperty(dbus.String, "Checker")

1330

secret = notifychangeproperty(dbus.ByteArray, "Secret",

1331

invalidate_only=True)

1321

1332

1322

1333

del notifychangeproperty

1323

1334

1350

1361

*args, **kwargs)

1351

1362

1352

1363

def start_checker(self, *args, **kwargs):

1353

old_checker = self.checker

1354

if self.checker is not None:

1355

old_checker_pid = self.checker.pid

1356

else:

1357

old_checker_pid = None

1364

old_checker_pid = getattr(self.checker, "pid", None)

1358

1365

r = Client.start_checker(self, *args, **kwargs)

1359

1366

# Only if new checker process was started

1360

1367

if (self.checker is not None

1369

1376

1370

1377

def approve(self, value=True):

1371

1378

self.approved = value

1372

gobject.timeout_add(timedelta_to_milliseconds

1373

(self.approval_duration),

1374

self._reset_approved)

1379

gobject.timeout_add(int(self.approval_duration.total_seconds()

1380

* 1000), self._reset_approved)

1375

1381

self.send_changedstate()

1376

1382

1377

1383

## D-Bus methods, signals & properties

1378

_interface = "se.recompile.Mandos.Client"

1379

1384

1380

1385

## Interfaces

1381

1386

1382

@dbus_interface_annotations(_interface)

1383

def _foo(self):

1384

return { "org.freedesktop.DBus.Property.EmitsChangedSignal":

1385

"false"}

1386

1387

## Signals

1388

1389

# CheckerCompleted - signal

1399

pass

1400

1401

# PropertyChanged - signal

1402

@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})

1402

1403

@dbus.service.signal(_interface, signature="sv")

1403

1404

def PropertyChanged(self, property, value):

1404

1405

"D-Bus signal"

1480

1481

access="readwrite")

1481

1482

def ApprovalDelay_dbus_property(self, value=None):

1482

1483

if value is None: # get

1483

return dbus.UInt64(self.approval_delay_milliseconds())

1484

return dbus.UInt64(self.approval_delay.total_seconds()

1485

* 1000)

1484

1486

self.approval_delay = datetime.timedelta(0, 0, 0, value)

1485

1487

1486

1488

# ApprovalDuration - property

1488

1490

access="readwrite")

1489

1491

def ApprovalDuration_dbus_property(self, value=None):

1490

1492

if value is None: # get

1491

return dbus.UInt64(timedelta_to_milliseconds(

1492

self.approval_duration))

1493

return dbus.UInt64(self.approval_duration.total_seconds()

1494

* 1000)

1493

1495

self.approval_duration = datetime.timedelta(0, 0, 0, value)

1494

1496

1495

1497

# Name - property

1508

1510

def Host_dbus_property(self, value=None):

1509

1511

if value is None: # get

1510

1512

return dbus.String(self.host)

1511

self.host = unicode(value)

1513

self.host = str(value)

1512

1514

1513

1515

# Created - property

1514

1516

@dbus_service_property(_interface, signature="s", access="read")

1561

1563

access="readwrite")

1562

1564

def Timeout_dbus_property(self, value=None):

1563

1565

if value is None: # get

1564

return dbus.UInt64(self.timeout_milliseconds())

1566

return dbus.UInt64(self.timeout.total_seconds() * 1000)

1565

1567

old_timeout = self.timeout

1566

1568

self.timeout = datetime.timedelta(0, 0, 0, value)

1567

1569

# Reschedule disabling

1578

1580

gobject.source_remove(self.disable_initiator_tag)

1579

1581

self.disable_initiator_tag = (

1580

1582

gobject.timeout_add(

1581

timedelta_to_milliseconds(self.expires - now),

1582

self.disable))

1583

int((self.expires - now).total_seconds()

1584

* 1000), self.disable))

1583

1585

1584

1586

# ExtendedTimeout - property

1585

1587

@dbus_service_property(_interface, signature="t",

1586

1588

access="readwrite")

1587

1589

def ExtendedTimeout_dbus_property(self, value=None):

1588

1590

if value is None: # get

1589

return dbus.UInt64(self.extended_timeout_milliseconds())

1591

return dbus.UInt64(self.extended_timeout.total_seconds()

1592

* 1000)

1590

1593

self.extended_timeout = datetime.timedelta(0, 0, 0, value)

1591

1594

1592

1595

# Interval - property

1594

1597

access="readwrite")

1595

1598

def Interval_dbus_property(self, value=None):

1596

1599

if value is None: # get

1597

return dbus.UInt64(self.interval_milliseconds())

1600

return dbus.UInt64(self.interval.total_seconds() * 1000)

1598

1601

self.interval = datetime.timedelta(0, 0, 0, value)

1599

1602

if getattr(self, "checker_initiator_tag", None) is None:

1600

1603

return

1611

1614

def Checker_dbus_property(self, value=None):

1612

1615

if value is None: # get

1613

1616

return dbus.String(self.checker_command)

1614

self.checker_command = unicode(value)

1617

self.checker_command = str(value)

1615

1618

1616

1619

# CheckerRunning - property

1617

1620

@dbus_service_property(_interface, signature="b",

1633

1636

@dbus_service_property(_interface, signature="ay",

1634

1637

access="write", byte_arrays=True)

1635

1638

def Secret_dbus_property(self, value):

1636

self.secret = str(value)

1639

self.secret = bytes(value)

1637

1640

1638

1641

del _interface

1639

1642

1673

1676

def handle(self):

1674

1677

with contextlib.closing(self.server.child_pipe) as child_pipe:

1675

1678

logger.info("TCP connection from: %s",

1676

unicode(self.client_address))

1679

str(self.client_address))

1677

1680

logger.debug("Pipe FD: %d",

1678

1681

self.server.child_pipe.fileno())

1679

1682

1760

1763

if self.server.use_dbus:

1761

1764

# Emit D-Bus signal

1762

1765

client.NeedApproval(

1763

client.approval_delay_milliseconds(),

1764

client.approved_by_default)

1766

client.approval_delay.total_seconds()

1767

* 1000, client.approved_by_default)

1765

1768

else:

1766

1769

logger.warning("Client %s was not approved",

1767

1770

client.name)

1773

1776

#wait until timeout or approved

1774

1777

time = datetime.datetime.now()

1775

1778

client.changedstate.acquire()

1776

client.changedstate.wait(

1777

float(timedelta_to_milliseconds(delay)

1778

/ 1000))

1779

client.changedstate.wait(delay.total_seconds())

1779

1780

client.changedstate.release()

1780

1781

time2 = datetime.datetime.now()

1781

1782

if (time2 - time) >= delay:

1980

1981

try:

1981

1982

self.socket.setsockopt(socket.SOL_SOCKET,

1982

1983

SO_BINDTODEVICE,

1983

str(self.interface + '\0'))

1984

(self.interface + "\0")

1985

.encode("utf-8"))

1984

1986

except socket.error as error:

1985

1987

if error.errno == errno.EPERM:

1986

1988

logger.error("No permission to bind to"

2189

2191

token_duration = Token(re.compile(r"P"), None,

2190

2192

frozenset((token_year, token_month,

2191

2193

token_day, token_time,

2192

token_week))),

2194

token_week)))

2193

2195

# Define starting values

2194

2196

value = datetime.timedelta() # Value so far

2195

2197

found_token = None

2196

followers = frozenset(token_duration,) # Following valid tokens

2198

followers = frozenset((token_duration,)) # Following valid tokens

2197

2199

s = duration # String left to parse

2198

2200

# Loop until end token is found

2199

2201

while found_token is not token_end:

2246

2248

timevalue = datetime.timedelta(0)

2247

2249

for s in interval.split():

2248

2250

try:

2249

suffix = unicode(s[-1])

2251

suffix = s[-1]

2250

2252

value = int(s[:-1])

2251

2253

if suffix == "d":

2252

2254

delta = datetime.timedelta(value)

2259

2261

elif suffix == "w":

2260

2262

delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)

2261

2263

else:

2262

raise ValueError("Unknown suffix {0!r}"

2264

raise ValueError("Unknown suffix {!r}"

2263

2265

.format(suffix))

2264

2266

except IndexError as e:

2265

2267

raise ValueError(*(e.args))

2282

2284

# Close all standard open file descriptors

2283

2285

null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)

2284

2286

if not stat.S_ISCHR(os.fstat(null).st_mode):

2285

raise OSError(errno.ENODEV,

2286

"{0} not a character device"

2287

raise OSError(errno.ENODEV, "{} not a character device"

2287

2288

.format(os.devnull))

2288

2289

os.dup2(null, sys.stdin.fileno())

2289

2290

os.dup2(null, sys.stdout.fileno())

2299

2300

2301

parser = argparse.ArgumentParser()

2301

2302

parser.add_argument("-v", "--version", action="version",

2302

version = "%(prog)s {0}".format(version),

2303

version = "%(prog)s {}".format(version),

2303

2304

help="show version number and exit")

2304

2305

parser.add_argument("-i", "--interface", metavar="IF",

2305

2306

help="Bind to interface IF")

2338

2339

help="Directory to save/restore state in")

2339

2340

parser.add_argument("--foreground", action="store_true",

2340

2341

help="Run in foreground", default=None)

2342

parser.add_argument("--no-zeroconf", action="store_false",

2343

dest="zeroconf", help="Do not use Zeroconf",

2344

default=None)

2341

2345

2342

2346

options = parser.parse_args()

2343

2347

2344

2348

if options.check:

2345

2349

import doctest

2346

doctest.testmod()

2347

sys.exit()

2350

fail_count, test_count = doctest.testmod()

2351

sys.exit(os.EX_OK if fail_count == 0 else 1)

2348

2352

2349

2353

# Default values for config file for server-global settings

2350

2354

server_defaults = { "interface": "",

2352

2356

"port": "",

2353

2357

"debug": "False",

2354

2358

"priority":

2355

"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",

2359

"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"

2360

":+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",

2356

2361

"servicename": "Mandos",

2357

2362

"use_dbus": "True",

2358

2363

"use_ipv6": "True",

2361

2366

"socket": "",

2362

2367

"statedir": "/var/lib/mandos",

2363

2368

"foreground": "False",

2369

"zeroconf": "True",

2364

2370

}

2365

2371

2366

2372

# Parse config file for server-global settings

2393

2399

for option in ("interface", "address", "port", "debug",

2394

2400

"priority", "servicename", "configdir",

2395

2401

"use_dbus", "use_ipv6", "debuglevel", "restore",

2396

"statedir", "socket", "foreground"):

2402

"statedir", "socket", "foreground", "zeroconf"):

2397

2403

value = getattr(options, option)

2398

2404

if value is not None:

2399

2405

server_settings[option] = value

2400

2406

del options

2401

2407

# Force all strings to be unicode

2402

2408

for option in server_settings.keys():

2403

if type(server_settings[option]) is str:

2404

server_settings[option] = unicode(server_settings[option])

2409

if isinstance(server_settings[option], bytes):

2410

server_settings[option] = (server_settings[option]

2411

.decode("utf-8"))

2405

2412

# Force all boolean options to be boolean

2406

2413

for option in ("debug", "use_dbus", "use_ipv6", "restore",

2407

"foreground"):

2414

"foreground", "zeroconf"):

2408

2415

server_settings[option] = bool(server_settings[option])

2409

2416

# Debug implies foreground

2410

2417

if server_settings["debug"]:

2413

2420

2414

2421

##################################################################

2415

2422

2423

if (not server_settings["zeroconf"] and

2424

not (server_settings["port"]

2425

or server_settings["socket"] != "")):

2426

parser.error("Needs port or socket to work without"

2427

" Zeroconf")

2428

2416

2429

# For convenience

2417

2430

debug = server_settings["debug"]

2418

2431

debuglevel = server_settings["debuglevel"]

2421

2434

stored_state_path = os.path.join(server_settings["statedir"],

2422

2435

stored_state_file)

2423

2436

foreground = server_settings["foreground"]

2437

zeroconf = server_settings["zeroconf"]

2424

2438

2425

2439

if debug:

2426

2440

initlogger(debug, logging.DEBUG)

2433

2447

2434

2448

if server_settings["servicename"] != "Mandos":

2435

2449

syslogger.setFormatter(logging.Formatter

2436

('Mandos ({0}) [%(process)d]:'

2450

('Mandos ({}) [%(process)d]:'

2437

2451

' %(levelname)s: %(message)s'

2438

2452

.format(server_settings

2439

2453

["servicename"])))

2447

2461

global mandos_dbus_service

2448

2462

mandos_dbus_service = None

2449

2463

2464

socketfd = None

2465

if server_settings["socket"] != "":

2466

socketfd = server_settings["socket"]

2450

2467

tcp_server = MandosServer((server_settings["address"],

2451

2468

server_settings["port"]),

2452

2469

ClientHandler,

2456

2473

gnutls_priority=

2457

2474

server_settings["priority"],

2458

2475

use_dbus=use_dbus,

2459

socketfd=(server_settings["socket"]

2460

or None))

2476

socketfd=socketfd)

2461

2477

if not foreground:

2462

2478

pidfilename = "/run/mandos.pid"

2463

2479

if not os.path.isdir("/run/."):

2533

2549

use_dbus = False

2534

2550

server_settings["use_dbus"] = False

2535

2551

tcp_server.use_dbus = False

2536

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2537

service = AvahiServiceToSyslog(name =

2538

server_settings["servicename"],

2539

servicetype = "_mandos._tcp",

2540

protocol = protocol, bus = bus)

2541

if server_settings["interface"]:

2542

service.interface = (if_nametoindex

2543

(str(server_settings["interface"])))

2552

if zeroconf:

2553

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2554

service = AvahiServiceToSyslog(name =

2555

server_settings["servicename"],

2556

servicetype = "_mandos._tcp",

2557

protocol = protocol, bus = bus)

2558

if server_settings["interface"]:

2559

service.interface = (if_nametoindex

2560

(server_settings["interface"]

2561

.encode("utf-8")))

2544

2562

2545

2563

global multiprocessing_manager

2546

2564

multiprocessing_manager = multiprocessing.Manager()

2570

2588

os.remove(stored_state_path)

2571

2589

except IOError as e:

2572

2590

if e.errno == errno.ENOENT:

2573

logger.warning("Could not load persistent state: {0}"

2591

logger.warning("Could not load persistent state: {}"

2574

2592

.format(os.strerror(e.errno)))

2575

2593

else:

2576

2594

logger.critical("Could not load persistent state:",

2581

2599

"EOFError:", exc_info=e)

2582

2600

2583

2601

with PGPEngine() as pgp:

2584

for client_name, client in clients_data.iteritems():

2602

for client_name, client in clients_data.items():

2585

2603

# Skip removed clients

2586

2604

if client_name not in client_settings:

2587

2605

continue

2612

2630

if datetime.datetime.utcnow() >= client["expires"]:

2613

2631

if not client["last_checked_ok"]:

2614

2632

logger.warning(

2615

"disabling client {0} - Client never "

2633

"disabling client {} - Client never "

2616

2634

"performed a successful checker"

2617

2635

.format(client_name))

2618

2636

client["enabled"] = False

2619

2637

elif client["last_checker_status"] != 0:

2620

2638

logger.warning(

2621

"disabling client {0} - Client "

2622

"last checker failed with error code {1}"

2639

"disabling client {} - Client last"

2640

" checker failed with error code {}"

2623

2641

.format(client_name,

2624

2642

client["last_checker_status"]))

2625

2643

client["enabled"] = False

2628

2646

.utcnow()

2629

2647

+ client["timeout"])

2630

2648

logger.debug("Last checker succeeded,"

2631

" keeping {0} enabled"

2649

" keeping {} enabled"

2632

2650

.format(client_name))

2633

2651

try:

2634

2652

client["secret"] = (

2637

2655

["secret"]))

2638

2656

except PGPError:

2639

2657

# If decryption fails, we use secret from new settings

2640

logger.debug("Failed to decrypt {0} old secret"

2658

logger.debug("Failed to decrypt {} old secret"

2641

2659

.format(client_name))

2642

2660

client["secret"] = (

2643

2661

client_settings[client_name]["secret"])

2651

2669

clients_data[client_name] = client_settings[client_name]

2652

2670

2653

2671

# Create all client objects

2654

for client_name, client in clients_data.iteritems():

2672

for client_name, client in clients_data.items():

2655

2673

tcp_server.clients[client_name] = client_class(

2656

2674

name = client_name, settings = client,

2657

2675

server_settings = server_settings)

2664

2682

try:

2665

2683

with pidfile:

2666

2684

pid = os.getpid()

2667

pidfile.write(str(pid) + "\n".encode("utf-8"))

2685

pidfile.write("{}\n".format(pid).encode("utf-8"))

2668

2686

except IOError:

2669

2687

logger.error("Could not write to file %r with PID %d",

2670

2688

pidfilename, pid)

2716

2734

def GetAllClientsWithProperties(self):

2717

2735

"D-Bus method"

2718

2736

return dbus.Dictionary(

2719

((c.dbus_object_path, c.GetAll(""))

2720

for c in tcp_server.clients.itervalues()),

2737

{ c.dbus_object_path: c.GetAll("")

2738

for c in tcp_server.clients.itervalues() },

2721

2739

signature="oa{sv}")

2722

2740

2723

2741

@dbus.service.method(_interface, in_signature="o")

2740

2758

2741

2759

def cleanup():

2742

2760

"Cleanup function; run on exit"

2743

service.cleanup()

2761

if zeroconf:

2762

service.cleanup()

2744

2763

2745

2764

multiprocessing.active_children()

2746

2765

wnull.close()

2760

2779

2761

2780

# A list of attributes that can not be pickled

2762

2781

# + secret.

2763

exclude = set(("bus", "changedstate", "secret",

2764

"checker", "server_settings"))

2782

exclude = { "bus", "changedstate", "secret",

2783

"checker", "server_settings" }

2765

2784

for name, typ in (inspect.getmembers

2766

2785

(dbus.service.Object)):

2767

2786

exclude.add(name)

2790

2809

except NameError:

2791

2810

pass

2792

2811

if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):

2793

logger.warning("Could not save persistent state: {0}"

2812

logger.warning("Could not save persistent state: {}"

2794

2813

.format(os.strerror(e.errno)))

2795

2814

else:

2796

2815

logger.warning("Could not save persistent state:",

2825

2844

tcp_server.server_activate()

2826

2845

2827

2846

# Find out what port we got

2828

service.port = tcp_server.socket.getsockname()[1]

2847

if zeroconf:

2848

service.port = tcp_server.socket.getsockname()[1]

2829

2849

if use_ipv6:

2830

2850

logger.info("Now listening on address %r, port %d,"

2831

2851

" flowinfo %d, scope_id %d",

2837

2857

#service.interface = tcp_server.socket.getsockname()[3]

2838

2858

2839

2859

try:

2840

# From the Avahi example code

2841

try:

2842

service.activate()

2843

except dbus.exceptions.DBusException as error:

2844

logger.critical("D-Bus Exception", exc_info=error)

2845

cleanup()

2846

sys.exit(1)

2847

# End of Avahi example code

2860

if zeroconf:

2861

# From the Avahi example code

2862

try:

2863

service.activate()

2864

except dbus.exceptions.DBusException as error:

2865

logger.critical("D-Bus Exception", exc_info=error)

2866

cleanup()

2867

sys.exit(1)

2868

# End of Avahi example code

2848

2869

2849

2870

gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,

2850

2871

lambda *args, **kwargs: